fix(config): render warning newlines

CHANGELOG.md

@@ -21,6 +21,7 @@ Docs: https://docs.openclaw.ai
 
 - Pi embedded runs: pass real built-in tools into Pi session creation and then narrow active tool names after custom tool registration, so the runner and compaction paths compile cleanly and keep OpenClaw-managed custom tool allowlists without feeding string arrays into `createAgentSession`. Thanks @vincentkoc.
 - Agents/OpenAI websocket: route native OpenAI websocket metadata and session-header decisions through the shared endpoint classifier so local mocks and custom `models.providers.openai.baseUrl` endpoints stay out of the native OpenAI path consistently across embedded-runner and websocket transport code. Thanks @vincentkoc.
+- Config: render validation warnings with real line breaks instead of a literal `\n` sequence in CLI/audit output. Fixes #70140.
 - Cron/doctor: repair malformed persisted cron job IDs through `openclaw doctor`, including legacy `jobId`, non-string `id`, and missing `id` rows, so `cron list` no longer needs display-layer coercion for corrupt store data. Fixes #70128.
 - Discord: normalize prefixed channel targets only at the thread-binding API boundary, so `sessions_spawn({ runtime: "acp", thread: true })` can create child threads from Discord channels without breaking current-channel ACP bindings. (#68034) Thanks @Zetarcos.
 - Discord: harden inbound thread metadata handling against partial Carbon channel getters, so non-command thread messages and queued jobs no longer crash when `name`, `parentId`, `parent`, or `ownerId` requires fetched raw data.

src/config/io.compat.test.ts

@@ -1,7 +1,7 @@
 import fs from "node:fs/promises";
 import os from "node:os";
 import path from "node:path";
-import { describe, expect, it } from "vitest";
+import { describe, expect, it, vi } from "vitest";
 import { applyRuntimeLegacyConfigMigrations } from "../commands/doctor/shared/runtime-compat-api.js";
 import { createConfigIO } from "./io.js";
 import { normalizeExecSafeBinProfilesInConfig } from "./normalize-exec-safe-bin.js";
@@ -70,6 +70,45 @@ describe("config io paths", () => {
     });
   });
 
+  it("logs validation warnings with real line breaks", async () => {
+    await withTempHome(async (home) => {
+      const configPath = path.join(home, ".openclaw", "openclaw.json");
+      await fs.mkdir(path.dirname(configPath), { recursive: true });
+      await fs.writeFile(
+        configPath,
+        JSON.stringify(
+          {
+            plugins: {
+              entries: {
+                "google-antigravity-auth": {
+                  enabled: false,
+                  config: { stale: true },
+                },
+              },
+            },
+          },
+          null,
+          2,
+        ),
+      );
+      const logger = {
+        error: vi.fn(),
+        warn: vi.fn(),
+      };
+
+      const io = createConfigIO({
+        configPath,
+        env: {} as NodeJS.ProcessEnv,
+        homedir: () => home,
+        logger,
+      });
+      io.loadConfig();
+
+      expect(logger.warn).toHaveBeenCalledWith(expect.stringMatching(/^Config warnings:\n- /));
+      expect(logger.warn).not.toHaveBeenCalledWith(expect.stringContaining("Config warnings:\\n"));
+    });
+  });
+
   it("normalizes safe-bin config entries at config load time", async () => {
     const cfg = {
       tools: {

src/config/io.ts

@@ -1198,7 +1198,7 @@ export function createConfigIO(overrides: ConfigIoDeps = {}) {
               `- ${sanitizeTerminalText(iss.path || "<root>")}: ${sanitizeTerminalText(iss.message)}`,
           )
           .join("\n");
-        deps.logger.warn(`Config warnings:\\n${details}`);
+        deps.logger.warn(`Config warnings:\n${details}`);
       }
       warnIfConfigFromFuture(validated.config, deps.logger);
       const cfg = materializeRuntimeConfig(validated.config, "load");